Power supply apparatus and method for manufacturing the same

Abstract

A power supply apparatus includes: an enclosure in which a first accommodating part being in a trough shape and having a first opening surface is formed; and a first battery module which is in a column shape and in which a plurality of single battery cells are stacked. The first battery module 31 held in the first accommodating part by holding loads acting between a first end part and a second end part on two end sides in a stacking direction and a first inner wall part and a second inner wall part opposite to each other in the first accommodating part. In the first inner wall part and the second inner wall part, a first groove part and a second groove part communicating with the first opening surface and extending perpendicularly with respect to the first opening surface are formed respectively.

What is claimed is: 
     
         1 . A power supply apparatus, comprising:
 an enclosure in which an accommodating part being in a trough shape and having an opening surface is formed; and   a battery module which is in a column shape and in which a plurality of single battery cells are stacked,   wherein the battery module is held in the accommodating part by holding loads acting between a first end part and a second end part on two end sides in a stacking direction and a first inner wall part and a second inner wall part opposite to each other in the accommodating part, and   a first groove part is formed in the first inner wall part, a second groove part is formed in the second inner wall part, the first groove part and the second groove part communicate with the opening surface, extend perpendicularly with respect to the opening surface, and have a bottomed or bottomless concave shape in a sectional view parallel to the stacking direction respectively.   
     
     
         2 . The power supply apparatus according to  claim 1 , wherein the first groove part and the second groove part extend from the opening surface to a bottom surface of the accommodating part. 
     
     
         3 . The power supply apparatus according to  claim 2 ,
 wherein the battery module is provided in the accommodating part, such that two electrodes of each of the single battery cells are arranged in rows along the stacking direction in a plan view, and   the first groove part and the second groove part are formed between two rows of the electrodes in the plan view.   
     
     
         4 . The power supply apparatus according to  claim 1 ,
 wherein the battery module is provided in the accommodating part, such that two electrodes of each of the single battery cells are arranged in rows along the stacking direction in a plan view, and   the first groove part and the second groove part are formed between two rows of the electrodes in the plan view.   
     
     
         5 . The power supply apparatus according to  claim 4 , wherein at least one of the first groove part and the second groove part is provided with a member connected to the battery module. 
     
     
         6 . The power supply apparatus according to  claim 3 , wherein at least one of the first groove part and the second groove part is provided with a member connected to the battery module. 
     
     
         7 . The power supply apparatus according to  claim 2 , wherein at least one of the first groove part and the second groove part is provided with a member connected to the battery module. 
     
     
         8 . The power supply apparatus according to  claim 1 , wherein at least one of the first groove part and the second groove part is provided with a member connected to the battery module. 
     
     
         9 . A method for manufacturing a power supply apparatus, the power supply apparatus comprising:
 an enclosure in which an accommodating part being in a trough shape and having an opening surface is formed; and   a battery module which is in a column shape and in which a plurality of single battery cells are stacked,   wherein the battery module is held in the accommodating part by holding loads acting between a first end part and a second end part on two end sides in a stacking direction and a first inner wall part and a second inner wall part opposite to each other in the accommodating part, and   a first groove part is formed in the first inner wall part, a second groove part is formed in the second inner wall part, the first groove part and the second groove part communicate with the opening surface, extend perpendicularly with respect to the opening surface, and have a bottomed or bottomless concave shape in a sectional view parallel to the stacking direction respectively,   the method comprising:   clamping the battery module by using a first arm part and a second arm part, and gripping the battery module while applying a pre-pressure force along the stacking direction to the first end part and the second end part;   inserting the first arm part and the second arm part into the first groove part and the second groove part from the opening surface side in a state in which the battery module is gripped by using the first arm part and the second arm part; and   withdrawing the first arm part and the second arm part from the first groove part and the second groove part after removing the pre-pressure force applied by the first arm part and the second arm part.   
     
     
         10 . The method of manufacturing a power supply apparatus according to  claim 9 , further comprising providing a member connected to the battery module in at least one of the first groove part and the second groove part after withdrawing the first arm part and the second arm part from the first groove part and the second groove part.